Garage opening in Leca wall and Plannja sheet

[peter.holm]

I am going to build a house with a detached garage that will be partially embedded in the ground, kind of a semi-basement. Above the garage, a loft will be constructed. I plan to use 300 mm Leca blocks for the garage section and then Plannja sheet metal as the floor structure. The loft will be built with loose timber. The garage will be approximately 7.5 meters wide and 8 meters long.

Of course, construction drawings will need to be made later, but the planning process has already started.

I want to have a wide garage door, 5 meters, and I'm considering how to handle the beam in the masonry wall above the garage door. It seems there aren't Leca beams that long? Should I mold and cast my own concrete beam or use a steel beam?

One more question, can the Plannja floor structure handle these spans without standing pillars in the garage? How thick would the floor structure need to be?

 

[anaitis]

Had a little idea about the beam: I would have cast a beam on top of the Plannjabjälklag, meaning casting the beam together with the floor slab.

 

[peter.holm]

You mean that instead of placing a Leacbalk, you form and reinforce in its place and then cast it together with the floor slab?

Yes, it should be solid. Someone will of course have to calculate how much reinforcement should be in the beam.

Great idea!